chore(deps): update dependency google-api-python-client to v2.26.1 (#1565)

diff --git a/samples/compute/requirements.txt b/samples/compute/requirements.txt
index 3a7adf5..d9146ab 100644
--- a/samples/compute/requirements.txt
+++ b/samples/compute/requirements.txt
@@ -1,3 +1,3 @@
-google-api-python-client==2.25.0
+google-api-python-client==2.26.1
 google-auth==2.3.0
 google-auth-httplib2==0.1.0